<template>
    <div>
        <el-upload :action="upload.url" :before-upload="handleBeforeUpload" :on-success="handleUploadSuccess"
            :on-error="handleUploadError" class="editor-img-uploader" name="file" :show-file-list="false"
            :headers="upload.headers" ref="uploadRef" v-if="type === 'url'">
        </el-upload>
        <div class="editor">
            <quill-editor ref="quillEditorRef" v-model:content="content" contentType="html"
                @textChange="() => $emit('update:modelValue', content)" :options="options" :style="styles" />
        </div>
    </div>
</template>
  
<script setup>
import { QuillEditor, Quill } from '@vueup/vue-quill';
import '@vueup/vue-quill/dist/vue-quill.snow.css';
import { globalHeaders } from "@/utils/request";

const props = defineProps({
    /* 编辑器的内容 */
    modelValue: undefined,
    /* 高度 */
    height: 400,
    /* 最小高度 */
    minHeight: 400,
    /* 只读 */
    readOnly: false,
    /* 上传文件大小限制(MB) */
    fileSize: 5,
    /* 类型（base64格式、url格式） */
    type: 'url'
});

const { proxy } = getCurrentInstance();

const upload = reactive({
    headers: globalHeaders(),
    url: import.meta.env.VITE_APP_BASE_API + '/resource/oss/upload'
})
const quillEditorRef = ref();

const options = ref({
    theme: "snow",
    bounds: document.body,
    debug: "warn",
    modules: {
        // 工具栏配置
        toolbar: {
            container: [
                ["bold", "italic", "underline", "strike"],       // 加粗 斜体 下划线 删除线
                ["blockquote", "code-block"],                    // 引用  代码块
                [{ list: "ordered" }, { list: "bullet" }],       // 有序、无序列表
                [{ indent: "-1" }, { indent: "+1" }],            // 缩进
                [{ size: ["small", false, "large", "huge"] }],   // 字体大小
                [{ header: [1, 2, 3, 4, 5, 6, false] }],         // 标题
                [{ color: [] }, { background: [] }],             // 字体颜色、字体背景颜色
                [{ align: [] }],                                 // 对齐方式
                ["clean"],                                       // 清除文本格式
                ["link", "image", "video"]                       // 链接、图片、视频
            ],
            // handlers: {
            //   image: function (value) {
            //     if (value) {
            //       // 调用element图片上传
            //       (document.querySelector(".editor-img-uploader>.el-upload"))?.click();
            //     } else {
            //       Quill.format("image", true);
            //     }
            //   },
            // },
        }
    },
    placeholder: "请输入内容",
    readOnly: props.readOnly,
});
const init = () => {
    const editor = this.$refs.editor;
    Quill = new Quill(editor, options.value);
    // 如果设置了上传地址则自定义图片上传事件
    if (props.type == 'url') {
        let toolbar = Quill.getModule("toolbar");
        toolbar.addHandler("image", (value) => {
            this.uploadType = "image";
            console.log(this.$refs.upload.$el)
            const uploadInput = this.$refs.upload.$el.querySelector('.el-upload');
            if (value) {
                if (uploadInput) {
                    uploadInput.click();
                }
            } else {
                this.quill.format("image", false);
            }
        });
    }
    this.Quill.pasteHTML(this.currentValue);
    this.Quill.on("text-change", (delta, oldDelta, source) => {
        const html = this.$refs.editor.children[0].innerHTML;
        const text = this.Quill.getText();
        const quill = this.Quill;
        this.currentValue = html;
        this.$emit("input", html);
        this.$emit("on-change", { html, text, quill });
    });
    this.Quill.on("text-change", (delta, oldDelta, source) => {
        this.$emit("on-text-change", delta, oldDelta, source);
    });
    this.Quill.on("selection-change", (range, oldRange, source) => {
        this.$emit("on-selection-change", range, oldRange, source);
    });
    this.Quill.on("editor-change", (eventName, ...args) => {
        this.$emit("on-editor-change", eventName, ...args);
    });
}
const styles = computed(() => {
    let style = {};
    if (props.minHeight) {
        style.minHeight = `${props.minHeight}px`;
    }
    if (props.height) {
        style.height = `${props.height}px`;
    }
    return style;
})

const content = ref("");

watch(() => props.modelValue, (v) => {
    if (v !== content.value) {
        content.value = v === undefined ? "<p></p>" : v;
    }
}, { immediate: true });

// 图片上传成功返回图片地址
function handleUploadSuccess(res) {
    // 如果上传成功
    if (res.code === 200) {
        // 获取富文本实例
        let quill = toRaw(quillEditorRef.value).getQuill();
        // 获取光标位置
        let length = quill.selection.savedRange.index;
        // 插入图片，res为服务器返回的图片链接地址
        quill.insertEmbed(length, "image", res.data.url);
        // 调整光标到最后
        quill.setSelection(length + 1);
        proxy?.$modal.closeLoading();
    } else {
        proxy?.$modal.loading(res.msg);
        proxy?.$modal.closeLoading();
    }
}

// 图片上传前拦截
function handleBeforeUpload(file) {
    const type = ["image/jpeg", "image/jpg", "image/png", "image/svg"];
    const isJPG = type.includes(file.type);
    //检验文件格式
    if (!isJPG) {
        proxy?.$modal.msgError(`图片格式错误!`);
        return false;
    }
    // 校检文件大小
    if (props.fileSize) {
        const isLt = file.size / 1024 / 1024 < props.fileSize;
        if (!isLt) {
            proxy?.$modal.msgError(`上传文件大小不能超过 ${props.fileSize} MB!`);
            return false;
        }
    }
    proxy?.$modal.loading('正在上传文件，请稍候...');
    return true;
}

// 图片失败拦截
function handleUploadError(err) {
    console.error(err);
    proxy?.$modal.msgError('上传文件失败');
}
init()
</script>
  
<style>
.editor-img-uploader {
    display: none;
}

.editor,
.ql-toolbar {
    white-space: pre-wrap !important;
    line-height: normal !important;
}

.quill-img {
    display: none;
}

.ql-snow .ql-tooltip[data-mode="link"]::before {
    content: "请输入链接地址:";
}

.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
    border-right: 0;
    content: "保存";
    padding-right: 0;
}

.ql-snow .ql-tooltip[data-mode="video"]::before {
    content: "请输入视频地址:";
}

.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
    content: "14px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="small"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="small"]::before {
    content: "10px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="large"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="large"]::before {
    content: "18px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="huge"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="huge"]::before {
    content: "32px";
}

.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
    content: "文本";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
    content: "标题1";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
    content: "标题2";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
    content: "标题3";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
    content: "标题4";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
    content: "标题5";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
    content: "标题6";
}

.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
    content: "标准字体";
}

.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="serif"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="serif"]::before {
    content: "衬线字体";
}

.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="monospace"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before {
    content: "等宽字体";
}</style>
  